Hello, I've compiled kernel 2.3.99-pre3 today, enabling DMA, etc. I have a DFI motherboard which has a Apollo Pro Plus chipset (which supports DMA66), and a Western Digital Caviar HD (15.3 gb), which also support DMA66... But although my BIOS tells me that it's possible to use DMA/66 with this HD, Linux doesn't seem to be using it. Below is what I get at startup (hda is the HD capable of DMA/66). So, my question is... Is UDMA/66 supported in Linux today? If not, could it be that it'll soon be? If it is... Then what else would I have to do?
I tried some FAQS and Howtos, and also a web search, but only found vague references to it... Some people saying they were not able to use DMA/66... Thanks, J. Uniform Multi-Platform E-IDE driver Revision: 6.30 ide: Assuming 40MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller on PCI bus 00 dev 39 VP_IDE: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:pio, hdd:DMA hda: WDC WD153BA, ATA DISK drive hdd: CD-ROM 50X, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: WDC WD153BA, 14669MB w/2048kB Cache, CHS=1870/255/63, UDMA(33) hdd: ATAPI 50X CD-ROM drive, 128kB Cache, UDMA(33) Uniform CD-ROM driver Revision: 3.07 -- Jeronimo Pellegrini Institute of Computing - Unicamp - Brazil http://www.dcc.unicamp.br/~jeronimo mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]